import java.util.Scanner;

public class Test_Demol2 {
    public static void main(String args[]){
        Scanner scanner = new Scanner(System.in);
        int day = scanner.nextInt();

        //switch语句学习：

        //不能作为switch的参数是：long float double boolean
        switch(day){
            case 1:
                System.out.println("今天是星期一");
                break;
            case 2:
                System.out.println("今天是星期二");
                break;
            case 3:
                System.out.println("今天是星期三");
                break;
            case 4:
                System.out.println("今天是星期四");
                break;
            case 5:
                System.out.println("今天是星期五");
                break;
            case 6:
                System.out.println("今天是星期六");
                break;
            case 7:
                System.out.println("今天是星期天");
            default:
                System.out.println("输入有误");
                break;

        }
    }
}
